Larry Allison of Fiberglas Fin Co made this THRESHER SUP fin in Leucadia, California for use in touring, downwinder, and racing Standup Paddleboards.

This fin mounts to a standard finbox with a tab and screw. Try this hand made fin in your BARK Boardworks Starboard or Surftech to increase stability and tracking while racing.

Get your's at Urban Surf and share your paddling adventures on Social Media at !